Tiffany & Co. jewelry - View our collection of antique Tiffany jewelry for sale. America's legend in the jewelry world, whether an antique Tiffany jewel, vintage or even a piece of Tiffany estate jewelry, the name in synonymous with timeless elegance and quality. Choose from antique Tiffany engagement rings, gem set rings and diamond rings in platinum and gold all signed Tiffany. The Three Graces sells only the finest and each piece of vintage Tiffany jewelry for sale comes with our guarantee of authenticity.